Clevis



(No Model.)

R. A. HOUSE.

GLEV'IS. No; 286,075. Patented Oct. 2, 18 83.

INVENTOR ATTORNEYS.-

' NrrnD STATES PATENT tries.

CLEVIS.

SPECIFICATION forming part of Letters Patent No. 286,075, dated October 2-, 188?.

Application filed July 18,1883. (X model.) V

To all whom it may concern Be it known that I, ROBERT A. Rouse, of Levee township, .in the county of Pike and State of Illinois, have invented anew and Improved Clovis, of which the following is a full, clear, and exact description.

The object of my invention is to provide an improved clevis,-at once simple in construction and effective in use.

The invention consists in a latch or look contrivance for holding the main clevis-bar in place on the beam of a plow, or in other position for use as a draft-connection, said lock consisting of a bar swivelcd to the clevis-arm, and fitted at the ends to overlap the heads of the connecting bolts or pins, or shoulders thereon, when the lock-bar is swung in line with the clevis-arm, said lockbar having a U shaped latch swiveled to it, so that the ends of thelatch will drop over the edges of the clevisarm to hold the lock-bar over the pins and secure them in place, all as hereinafter fully described and claimed.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure l is a side elevation of my improved safety clevis, showing the connecting pins locked thereto. Fig. 2 is a plan view, with the lock-bar swung endwise to release the connecting-pins; and Fig. 3 is a rear View with the parts in locked positions.

The letter a represents the main bar of the clevis, made in the usual form, with upper andlower arms, b c, and a front bar or head,

d, having a vertically-ranging series of holes, 0, for adjustable connection of the draft.

The letters f 9 represent, respectively, the front and rear pins, by which the clevis is connected to the beam of a plow or other implement or machine, pin {1 being preferably the stronger of the two, and having its head elongated, and recessed at the top, as at h, to serve for a wrench, which shall always be at hand when required in making adjustments of the parts of the plow or other machine to which the clevis may be connected.

have heads f g, respectively, on which the tongues i i of the lockbar 7c overlap when the bar is swung on its pivot Z, by which it is The pins fg swiveled to clevis-arm b, sothat the lock-bar and arm are in line with each other, in which position of the parts the pinsf y will be held down to place and secured against falling or jarring out; and to fastenthe parts securely in this position I employ a simple latch consisting of a pin passed through the lock bar 76 transversely, and bent down at the projecting ends and into (1 form, as at m, so that it may gravitate or be moved to position with its bent ends at either side of the clevisarm I), as in Figs. 1 and 3, to prevent turning of the lockbar is from off the heads of pins f g, but may easily be swung with its bent ends in horizontal plane, to permit the lock-bar k to be swung horizontally, as in Fig. 2, for ready re moval of the connecting-pins to detach the clevis when required.

I prefer to form the joint-shoulders 0 of the lock-bar and pin-heads obliquely, as in Fig. 2, so that the lock-bar will swing one way only, and will be stopped by contact of said shoulders 0 when the lock-bar is in line with the arm I), and with the latch at ready to drop to the locking position self -actingly but the shoulders 0 may be in the sweep of a circle struck from the center of the pivot Z, topcrmit the lock-bar k to swing freely both ways, if desired.

I do not limit myself to the particular shape of the jointshoulders 0, as here shown, as these shoulders may be angular, or over and undercut, or tongued and grooved to match each other; but the construction shown is pre ferred because cheaper to make, while an swering every practical purpose.

It is evident that my improvement has material advantages over the clevises of common construction, in which the fastening-pins are secured by screw-nuts, or leather,- or metallic keys, which are so liable to work loose or fall out, causing the breaking of the clevis by the draft coming on one side or arm of it; and it is believed that my safety-clevis has every requirement adapting it to every possible situation where a draft-clevis is needed, and that it will prove effective and durable in use.

I do not abandon or dedicate to the public any patentable feature set forth herein and not hereinafter claimed, but reserve the right to claim the same, either in a reissue of any patent that may be granted upon this application fg, of the lock-bar is, carrying the latch m, an 1 or in other applications for Letters Patent that pivoted to the clevis-arm the shoulders 0 of I may make. the lock-bar 7c, and pin-headsf y, being formed Having thus described my invention, what obliquely to stop the lock-bar in line with the I 5 5 Iclaim as new and desire to secure by Letters clevis-arm, substantially as shown and de- Patent,;is scribed.

1. The combination with the arm band pins fg of the clevis, of the pivoted lock-bar k and ROBERT HOUSE- its latch m, substantially as shown and de- \Vitnesses: 1o scribed.

J 01 m 0. FARMER, 2. The combination, with the arm I) and pins STEPHEN THORNE. 

